US2020263416A1PendingUtilityA1

A fixing

34
Assignee: WATERFORD INSTITUTE OF TECHPriority: Jul 25, 2017Filed: Jul 25, 2018Published: Aug 20, 2020
Est. expiryJul 25, 2037(~11 yrs left)· nominal 20-yr term from priority
Inventors:Conor J. Walsh
E04B 1/04E04C 2/288E04B 1/41E04B 1/7633
34
PatentIndex Score
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Claims

Abstract

A ratchet fixing 5 for connecting an insulation layer 4 to a precast concrete panel 2, a precast concrete panel system 1 comprising the fixing 5 and a method for forming an insulated precast concrete panel system 1 comprising fixing an insulation layer 4 to a concrete panel 2 with fixings 5 in which the fixing 5 is made up of an insulation layer penetrating portion 18 and a concrete penetrating portion 19 contiguous with the insulating layer penetrating portion 18, the insulation layer penetrating portion 18 having a disc-like tension head 20 for abutting against the outer surface of the insulation layer 4 and a pawl 22 and ratchet 25 for securing the tension head 20 to the insulation layer penetrating portion 18.

Claims

exact text as granted — not AI-modified
1 . A fixing for connecting an insulation layer to a precast concrete panel comprising:
 an insulation layer penetrating portion and   a concrete penetrating portion contiguous with the insulation layer penetrating portion wherein the insulation layer penetrating portion comprises a flexible tie.   
     
     
         2 . A fixing as claimed in  claim 1  wherein the insulation layer penetrating portion further comprises a tension head attachable to the flexible tie. 
     
     
         3 . A fixing as claimed in  claim 2  wherein the flexible tie comprises a ratchet attachable to the tension head at a pawl. 
     
     
         4 . A fixing as claimed in  claim 3  wherein the ratchet comprises through holes in the tie. 
     
     
         5 . A fixing as claimed in  claim 3  or  claim 4  wherein the pawl comprises a slot in the tension head. 
     
     
         6 . A fixing as claimed in  claim 5  wherein the tension head comprises a collar surrounding the slot. 
     
     
         7 . A fixing as claimed in any of  claims 2  to  6  wherein the tension head comprises indents to define finger grips in the tension head. 
     
     
         8 . A fixing as claimed in any of  claims 1  to  7  wherein the concrete penetrating portion comprises a wall plug. 
     
     
         9 . A fixing as claimed in  claim 8  wherein the wall plug comprises a substantially cylindrical head. 
     
     
         10 . A fixing as claimed in  claim 9  wherein the substantially cylindrical head comprises at least one laterally extending fin for maximizing grip of the wall plug on concrete. 
     
     
         11 . A fixing as claimed in  claim 9  or  claim 10  wherein the substantially cylindrical head comprises at least one notch for maximizing grip of the wall plug on concrete. 
     
     
         12 . A fixing as claimed in  claim 8  wherein the wall plug comprises a substantially T-shaped head. 
     
     
         13 . A fixing as claimed in any of  claims 1  to  12  wherein the concrete penetrating portion comprises a flange for stabilising the fixing in position during concrete pouring. 
     
     
         14 . A fixing as claimed in  claim 13  wherein the flange extends laterally outwards from the concrete penetrating portion. 
     
     
         15 . A fixing as claimed in any of  claims 1  to  14  further comprising at least one rib for strengthening the fixing. 
     
     
         16 . A fixing as claimed in  claim 15  wherein the at least one rib is provided on the insulation layer penetrating portion. 
     
     
         17 . A fixing as claimed in  claim 15  or  16  wherein the at least one rib is provided on the concrete penetrating portion. 
     
     
         18 . A precast concrete panel system comprising a fixing as claimed in any of  claims 1  to  17 . 
     
     
         19 . A precast concrete panel system as claimed in  claim 18  wherein the system comprises a precast concrete panel reinforced with rebar and insulation fixed to the precast concrete panel by the fixing wherein the rebar and the fixing are spatially separate within the system. 
     
     
         20 . A precast concrete panel system as claimed in  claim 18  or  claim 19  wherein the insulation layer comprises insulation board. 
     
     
         21 . A precast concrete panel system as claimed in  claim 20  wherein the insulation board comprises expanded polystyrene. 
     
     
         22 . A method for forming an insulated precast concrete panel system comprising fixing an insulation layer to a concrete panel with fixings as claimed in any of  claims 1  to  17 . 
     
     
         23 . A method as claimed in  claim 22  comprising fitting the fixings to the insulation layer via the insulation layer penetrating portion, laying the insulation layer in a deck and pouring concrete into the deck to encapsulate the concrete penetrating portion of the fixings. 
     
     
         24 . A method as claimed in  claim 23  further comprising the step of constructing a rebar in the deck before pouring the concrete. 
     
     
         25 . A method as claimed in  claim 24  wherein the rebar is spatially separated from the fixings to prevent thermal bridging.

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